The synthesis of 6,9-bis[(aminoalkyl)amino] substituted benzo[g]quinoxaline-, benzo[g]quinazoline- and benzo-[g]phthalazine-5,10-diones<i>via</i>regiospecific displacements
作者:A. Paul Krapcho、Martin J. Maresch、Anna L. Helgason、Kristin E. Rosner、Miles P. Hacker、Silvano Spinelli、Ernesto Menta、Ambrogio Oliva
DOI:10.1002/jhet.5570300624
日期:1993.12
The synthesis of 6,9-difluoro substituted benzo[g]quinoxaline-5,10-diones (3A), benzo[g]quinazoline-5,10-diones (3B) and benzo[g]phthalazine-5,10-diones (3C) have been accomplished. Treatment of 3A, 3B or 3C with diamines or N-(t-butoxycarbonyl)ethylenediamine led to the corresponding 6,9-bis[(aminoalkyl)amino]-substituted analogues related to 2A, 2B and 2C, respectively. The mono-substituted derivatives
6,9-二氟取代的苯并[g]喹喔啉-5,10-二酮(3A),苯并[g]喹唑啉-5,10-二酮(3B)和苯并[g]酞嗪-5,10-二酮的合成(3C)已完成。用二胺或N-(叔丁氧基羰基)乙二胺处理3A,3B或3C分别导致与2A,2B和2C有关的相应的6,9-双[(氨基烷基)氨基]取代的类似物。单取代的衍生物4h和4i可以从3A开始的位移中分离出来。嘧啶嘧啶环的竞争性开环与N,N-二甲基乙二胺反应期间发生2C。从2Ac上除去BOC保护基团得到盐酸盐2Ab。开发了一条通往6,9-二羟基苯并[g]-酞嗪-5,10-二酮(21a)的新型合成途径。容易实现21a向二甲苯磺酸酯21b的转化。用N,N-二甲基乙二胺或N-(叔丁氧基羰基)乙二胺处理21b分别导致2Ca和2Cc。从2Cc中除去BOC保护基用三氟乙酸进行离子交换,得到盐酸盐2Cb。用N-(叔丁氧基羰基)乙二胺处理二甲苯磺酸酯21b也导致单取代的类